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HomeCoursesAlgorithms for Coding Interviews in Java

4.8

Intermediate

15h

Algorithms for Coding Interviews in Java

The ultimate guide to coding interviews in Java. Developed by FAANG engineers, tackle 50+ challenge problems, review detailed solutions, and learn strategies to craft optimal solutions.

Join 2.8M developers at

Overview

Content

Reviews

Algorithms are one of the most common themes in coding interviews, so having a firm grip on them can be the difference between being hired or not. After this comprehensive course in Java, one of the most popular coding languages, you'll have an in-depth understanding of different algorithm types and be equipped with a simple process for approaching complex analysis. As you progress through the course, you’ll be exposed to the most important algorithms that you're likely to encounter in an interview. You'll work your way through over 50 interactive coding challenges and review detailed solutions for each problem. And guess what? Even if you’re not yet fully comfortable with Java, you’ll walk away with the ability to craft optimal solutions for addressing tough coding interview questions in it.

Algorithms are one of the most common themes in coding interviews, so having a firm grip on them can be the difference between b...Show More

TAKEAWAY SKILLS

Java

Programming Language

Prepare for Interview

Algorithms

Time Complexity

Content

151 Lessons17 Quizzes50 Challenges

Introduction

2 Lessons

Get familiar with foundational concepts, coding challenges, and advanced problem-solving strategies for Java.

Intended Audience

Learning Outcomes

Algorithmic Paradigms

4 Lessons

Grasp the fundamentals of brute force, greedy algorithms, divide and conquer, and dynamic programming.

Asymptotic Analysis

22 Lessons

Master the steps to asymptotic analysis, comparing algorithm complexities, and solving complexity challenges.

Sorting and Searching

26 Lessons

Discover algorithm techniques for sorting (like Merge Sort and QuickSort) and efficient searching methods.

Dynamic Programming

25 Lessons

Deepen your knowledge of dynamic programming techniques for solving complex coding problems efficiently.

Greedy Algorithms

20 Lessons

Follow the process of designing and implementing efficient greedy algorithms to solve diverse optimization problems.

Divide and Conquer

23 Lessons

Master the steps to applying divide and conquer for efficient problem-solving in algorithm design.

Graph Algorithms

22 Lessons

Sharpen your skills in implementing and solving diverse graph algorithms efficiently.

Appendix: Auxiliary Source Code

5 Lessons

Unpack the core of auxiliary classes like Stack, Queue, PriorityQueue, HashMap, and ArrayList.

10.

Conclusion

2 Lessons

Master the steps to understand efficient algorithms and enhance your technical interview skills.

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Course Author:

Coderust

Developed by MAANG Engineers

Every Educative lesson is designed by a team of ex-MAANG software engineers and PhD computer science educators, and developed in consultation with developers and data scientists working at Meta, Google, and more. Our mission is to get you hands-on with the necessary skills to stay ahead in a constantly changing industry. No video, no fluff. Just interactive, project-based learning with personalized feedback that adapts to your goals and experience.

Trusted by 2.8 million developers working at companies

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Anthony Walker

@_webarchitect_

"Just finished my first full #ML course: Machine learning for Software Engineers from Educative, Inc. ... Highly recommend!"

Evan Dunbar

ML Engineer

"You guys are the gold standard of crash-courses... Narrow enough that it doesn't need years of study or a full blown book to get the gist, but broad enough that an afternoon of Googling doesn't cut it."

Software Developer

Carlos Matias La Borde

"I spend my days and nights on Educative. It is indispensable. It is such a unique and reader-friendly site"

Souvik Kundu

Front-end Developer

"Your courses are simply awesome, the depth they go into and the breadth of coverage is so good that I don't have to refer to 10 different websites looking for interview topics and content."

Vinay Krishnaiah

Software Developer

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Personalized Interview Prep

Skip the LeetCode grind with a custom roadmap that adapts to your goals. Hands-on practice for Coding Interviews, System Design, and more.

Mock Interviews

Test your skills in a simulated interview setting. Receive personalized feedback based on your performance. Available for Coding Interviews, System Design, and more.

AI Prompt

Build prompt engineering skills. Practice implementing AI-informed solutions.

Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

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Free Resources

Frequently Asked Questions

How do I prepare for a Java coding interview?

Focus on mastering data structures (arrays, linked lists, stacks, queues, trees, graphs) and algorithms (sorting, searching, dynamic programming). Practice on platforms like Educative. Get comfortable with Java-specific features like collections, generics, and streams. Time management is crucial, so simulate timed coding interviews.

Is Java a good choice for coding interviews?

Yes, Java is a great language for coding interviews. It offers a balance of readability, ease of debugging, and rich built-in libraries for data structures and algorithms. Many top tech companies expect candidates to use languages like Java for coding interviews.

How do I improve my Java coding skills?

Regularly practice coding problems, explore open-source projects, and review Java’s core concepts like OOP, exception handling, and multithreading. Read code written by experienced developers, contribute to Java forums, and stay updated with Java’s latest features.

How do I write fast code in Java?

Write efficient algorithms by understanding time and space complexity. Use appropriate data structures from Java’s collections framework and avoid unnecessary memory allocations. Opt for primitive data types where possible and utilize Java’s profiling tools to identify and optimize bottlenecks.

Why is Java good for algorithms?

Java is widely used for algorithms due to its high-level abstraction and performance balance. Its rich libraries (like java.util) provide efficient implementations of common data structures, making it easy to focus on problem-solving. Additionally, Java’s strict typing helps catch errors early during development.

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